例子
某电商公司是多站点结构,目前已经开设了ABC三个子站点,这3个子站点的会员等级体系不同,
但产品模型和数据是完全一致的,产品平时在各个站点分别有不同的销售价格;现计划在全公司范围内进行618大促,
活动期间为6月17日零时-6月19日零时,针对不同用户的会员等级,对产品销售实行不同折扣优惠;
设计相关的系统对外提供商品实时价格获取功能;
A站点
超级VIP用户:9折优惠
VIP用户:7折优惠
普通用户:无优惠
B站点
金牌客户:8.5折优惠
银牌客户:7.5折优惠
铜牌客户:6.5折优惠
普通用户:无优惠
C站点
皇冠会员:8折优惠
普通用户:无优惠
分析
1.我们怎么来领域建模?
画个图如下
(1)初看可能会认为根据站点建立一个领域对象,根据用户等级建立一个领域对象,然后进行组合?
但细想,我们怎么能够穷举所有的具体规则和对象呢?,万一以后还需要根据新的标签比如用户性别,年龄,职业等去建立规则,我们岂不是要建立一堆的对象?
所以我们建模应该面向抽象而不是具体
(2)那这里的抽象又是指的是什么?
我们可以看到,该系统的核心诉求是能根据不同的规则,拿到对应的结果
进一步的细分诉求
(1)规则,结果需要可配置
(2)规则可随意扩展(可以随时增删改规则),随意组合(即可以调整顺序)
(3)规则可方便管理(规则的可视化以及方便的目录管理,我一眼就知道这个规则是干什么的)
(4)规则可以复用,(规则和规则之间要独立解耦)
(3)根据上面的需求我们来设计对应的数据结构和算法?
可以随意配置编排 ->数据结构我们自然想到链表,设计模式我们自然想到责任链模式
可复用 ->我们自然想到模板模式
方便管理可视化 ->我们自然想到决策树结构
(4)那决策树就是我们的一个核心领域对象,它应该包含哪些细分?
节点TreeNode
a.节点类型
nodeType:根节点,叶子节点,果实节点
b.节点对应的值
nodeValue
c.节点的id
treeNodeId
d.节点对应的处理器类型和描述
ruleKey,ruleDesc
e.节点对应的边
List<TreeNodeLink> treeNodeLinkList
f.节点所属的树id
treeId
节点对应的边TreeNodeLink
a.边的起始和终止节点id
fromNodeId,toNodeId
b.边上面的判断规则,只有满足判断规则,才能从起始走到终止
ruleLimitType,ruleLimitValue
树节点TreeNode
public class TreeNode {
/*
*所属的树id
*/
private Long treeId;
/*
*节点类型 根节点 叶子节点 果实节点
*/
private Integer nodeType;
/*
*节点id
*/
private Long treeNodeId;
/*
* 节点所对应的值 一般只有果实节点才会有值
*/
private String nodeValue;
/*
*节点所对应的处理器类型
*/
private String ruleKey;
/*
*节点所对应的处理器描述
*/
private String ruleDesc;
/*
*节点所对应的边
*/
private List<TreeNodeLink> treeNodeLinkList;
}
边TreeNodeLink
public class TreeNodeLink {
/*
* 对应的起始节点
*/
private Long nodeIdFrom;
/*
* 对应的终止节点
*/
private Long nodeIdTo;
/*
* 对应的规则判断类型 大于/小于/大于等于/小于等于/等于/不等于
*/
private Integer ruleLimitType;
/*
* 对应的规则判断值
*/
private String ruleLimitValue;
}
根节点TreeRoot
public class TreeRoot {
/*
*根节点Id
*/
private Long treeRootNodeId;
/*
*根节点名称
*/
private String treeName;
/*
*树Id
*/
private Long treeId;
}
决策树TreeRich
public class TreeRich {
/*
* 决策树的根节点
*/
private TreeRoot treeRoot;
/*
* 决策树的子节点
*/
private Map<Long, TreeNode> treeNodeMap;
}
至此我们的核心对象设计完毕,下面可以来设计接口将他们编排起来
接口设计
树节点逻辑过滤器接口LogicFilter
后续新增规则,可以通过实现这个接口,比如UserAgeFilter针对用户年龄做一些处理,UserGenerFilter针对用户性别做一些处理
public interface LogicFilter {
/**
* 逻辑决策器
*
* @param matterValue 决策值
* @param treeNodeLineInfoList 决策节点
* @return 下一个节点Id
*/
Long filter(String matterValue, List<TreeNodeLink> treeNodeLineInfoList);
/**
* 获取决策值
*
* @param decisionMatter 决策物料
* @return 决策值
*/
String matterValue(Long treeId, String userId, Map<String, String> decisionMatter);
}
决策抽象类提供基础服务
- 在抽象方法中实现了接口方法,同时定义了基本的决策方法;1、2、3、4、5,等于、小于、大于、小于等于、大于等于的判断逻辑。
- 同时定义了抽象方法,让每一个实现接口的类都必须按照规则提供决策值,这个决策值用于做逻辑比对。
public abstract class BaseLogic implements LogicFilter{
@Override
public Long filter(String matterValue, List<TreeNodeLink> treeNodeLinkList) {
for (TreeNodeLink nodeLine : treeNodeLinkList) {
if (decisionLogic(matterValue, nodeLine)){
return nodeLine.getNodeIdTo();
}
}
return 0L;
}
@Override
public abstract String matterValue(Long treeId, String userId, Map<String, String> decisionMatter);
private boolean decisionLogic(String matterValue, TreeNodeLink nodeLink) {
switch (nodeLink.getRuleLimitType()) {
case 1:
return matterValue.equals(nodeLink.getRuleLimitValue());
case 2:
return Double.parseDouble(matterValue) > Double.parseDouble(nodeLink.getRuleLimitValue());
case 3:
return Double.parseDouble(matterValue) < Double.parseDouble(nodeLink.getRuleLimitValue());
case 4:
return Double.parseDouble(matterValue) <= Double.parseDouble(nodeLink.getRuleLimitValue());
case 5:
return Double.parseDouble(matterValue) >= Double.parseDouble(nodeLink.getRuleLimitValue());
default:
return false;
}
}
}
树节点逻辑实现类
站点过滤器SourceTypeFilter
/*
*站点类型过滤器
*/
public class SourceTypeFilter extends BaseLogic{
@Override
public String matterValue(Long treeId, String userId, Map<String, String> decisionMatter) {
return decisionMatter.get(RuleType.USER_SOURCE.getType());
}
}
用户类型过滤器
/*
*用户类型过滤器
*/
public class UserTypeFilter extends BaseLogic{
@Override
public String matterValue(Long treeId, String userId, Map<String, String> decisionMatter) {
return decisionMatter.get(RuleType.USER_LEVEL.getType());
}
}
目前两个决策逻辑的节点获取值的方式都非常简单,只是获取用户的入参即可。实际的业务开发可以从数据库、RPC接口、缓存运算等各种方式获取。
决策引擎接口定义
IEngine
对于使用方来说也同样需要定义统一的接口操作,这样的好处非常方便后续拓展出不同类型的决策引擎,也就是可以建造不同的决策工厂。
public interface IEngine {
/*
* @param treeId 决策树id
* @param userId 用户id
* @param treeRich 整棵决策树
* @param decisionMatter 决策值
* @return EngineResult
*/
EngineResult process(final Long treeId, final String userId, TreeRich treeRich, final Map<String, String> decisionMatter);
}
决策节点配置
EngineConfig
public class EngineConfig {
static Map<String, LogicFilter> logicFilterMap;
static {
logicFilterMap = new ConcurrentHashMap<>();
logicFilterMap.put(RuleType.USER_SOURCE.getType(), new SourceTypeFilter());
logicFilterMap.put(RuleType.USER_LEVEL.getType(), new UserTypeFilter());
}
}
- 在这里将可提供服务的决策节点配置到map结构中,对于这样的map结构可以抽取到数据库中,那么就可以非常方便的管理。
基础决策引擎功能
EngineBase责任链的模式
public abstract class EngineBase extends EngineConfig implements IEngine {
@Override
public abstract EngineResult process(Long treeId, String userId, TreeRich treeRich, Map<String, String> decisionMatter);
protected TreeNode engineDecisionMaker(TreeRich treeRich, Long treeId, String userId, Map<String, String> decisionMatter) {
TreeRoot treeRoot = treeRich.getTreeRoot();
Map<Long, TreeNode> treeNodeMap = treeRich.getTreeNodeMap();
// 规则树根ID
Long rootNodeId = treeRoot.getTreeRootNodeId();
TreeNode treeNodeInfo = treeNodeMap.get(rootNodeId);
//节点类型[NodeType];1子叶、2果实
while (treeNodeInfo.getNodeType().equals(1)) {
String ruleKey = treeNodeInfo.getRuleKey();
LogicFilter logicFilter = logicFilterMap.get(ruleKey);
String matterValue = logicFilter.matterValue(treeId, userId, decisionMatter);
Long nextNode = logicFilter.filter(matterValue, treeNodeInfo.getTreeNodeLinkList());
treeNodeInfo = treeNodeMap.get(nextNode);
String log = "决策树引擎=>{} userId:{} treeId:{} treeNode:{} ruleKey:{} matterValue:{}";
String.format(log, treeRoot.getTreeName(), userId, treeId, treeNodeInfo.getTreeNodeId(), ruleKey, matterValue);
System.out.println(log);
}
return treeNodeInfo;
}
}
- 这里主要提供决策树流程的处理过程,有点像通过链路的关系(站点,用户会员等级)在二叉树中寻找果实节点的过程。
- 同时提供一个抽象方法,执行决策流程的方法供外部去做具体的实现。
决策引擎的实现
TreeEngineHandle
public class TreeEngineHandle extends EngineBase{
@Override
public EngineResult process(Long treeId, String userId, TreeRich treeRich, Map<String, String> decisionMatter) {
// 决策流程
TreeNode treeNode = engineDecisionMaker(treeRich, treeId, userId, decisionMatter);
// 决策结果
return new EngineResult(userId, treeId, treeNode.getTreeNodeId(), treeNode.getNodeValue());
}
}
其它辅组类
NodeType
public enum NodeType {
ROOT(0,"根节点"),
LEAF(1,"叶子节点"),
RESULT(2,"结果节点")
;
private Integer code;
private String desc;
}
RuleLimitType
public enum RuleLimitType {
EQUAL(1,"相等"),
GREATER(2,"大于"),
LESS(3,"小于"),
GREATER_OR_EQUAL(4,"大于等于"),
LESS_OR_EQUAL(5,"小于等于"),
;
private Integer code;
private String desc;
}
RuleType
public enum RuleType {
USER_AGE(1,"userAge","用户年龄"),
USER_SEX(2,"userSex","用户性别"),
USER_LEVEL(3,"userLevel","用户级别"),
USER_SOURCE(4,"userSource","用户来源"),
;
private Integer code;
private String type;
private String desc;
}
RuleConstant
public class RuleConstant {
//用户来源于A站点
public static final String USER_SOURCE_A = "A";
//用户来源于B站点
public static final String USER_SOURCE_B = "B";
//用户来源于C站点
public static final String USER_SOURCE_C = "C";
//用户超级VIP
public static final String USER_LEVEL_SUPER_VIP = "SUPER_VIP";
//用户VIP
public static final String USER_LEVEL_VIP = "VIP";
//普通用户
public static final String USER_LEVEL_COMMON = "COMMON";
//金牌会员
public static final String USER_LEVEL_GOLD = "GOLD";
//银牌会员
public static final String USER_LEVEL_SILVER = "SILVER";
//铜牌会员
public static final String USER_LEVEL_BRONZE = "BRONZE";
//皇冠会员
public static final String USER_LEVEL_CROWN = "CROWN";
}
最终测试类
TestMain
package 营销;
import cn.hutool.json.JSONUtil;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class TestMain {
static TreeRich treeRich;
public static void main(String[] args) {
init();
System.out.println("决策树组合结构信息:");
System.out.println(JSONUtil.toJsonStr(treeRich));
IEngine treeEngineHandle = new TreeEngineHandle();
Map<String, String> decisionMatter = new HashMap<>();
//用户是来源于A站点的普通VIP时 获取对应的优惠
decisionMatter.put(RuleType.USER_SOURCE.getType(), "A");
decisionMatter.put(RuleType.USER_LEVEL.getType(), RuleConstant.USER_LEVEL_VIP);
EngineResult result = treeEngineHandle.process(10001L, "12122333", treeRich, decisionMatter);
System.out.println("测试结果:");
System.out.println(JSONUtil.toJsonStr(result));
}
//初始化规则
//某电商公司是多站点结构,目前已经开设了ABC三个子站点,这3个子站点的会员等级体系不同,
//但产品模型和数据是完全一致的,产品平时在各个站点分别有不同的销售价格;现计划在全公司范围内进行618大促,
//活动期间为6月17日零时-6月19日零时,针对不同用户的会员等级,对产品销售实行不同折扣优惠;
//请设计相关的系统对外提供商品实时价格获取功能;
//A站点
// 超级VIP用户:7折优惠
// VIP用户:9折优惠
// 普通用户:无优惠
//B站点
// 金牌客户:6.5折优惠
// 银牌客户:7.5折优惠
// 铜牌客户:8.5折优惠
// 普通用户:无优惠
//C站点
// 皇冠会员:8折优惠
// 普通用户:无优惠
public static void init() {
// 节点:1
TreeNode treeNode_01 = new TreeNode();
treeNode_01.setTreeId(10001L);
treeNode_01.setTreeNodeId(1L);
treeNode_01.setNodeType(1);
treeNode_01.setNodeValue(null);
treeNode_01.setRuleKey(RuleType.USER_SOURCE.getType());
treeNode_01.setRuleDesc(RuleType.USER_SOURCE.getDesc());
// 链接:1->11 即根节点 -> A站点
TreeNodeLink treeNodeLink_11 = new TreeNodeLink();
treeNodeLink_11.setNodeIdFrom(1L);
treeNodeLink_11.setNodeIdTo(11L);
treeNodeLink_11.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_11.setRuleLimitValue("A");
// 链接:1->12 即根节点 -> B站点
TreeNodeLink treeNodeLink_12 = new TreeNodeLink();
treeNodeLink_12.setNodeIdFrom(1L);
treeNodeLink_12.setNodeIdTo(12L);
treeNodeLink_12.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_12.setRuleLimitValue("B");
// 链接:1->13 即根节点 -> C站点
TreeNodeLink treeNodeLink_13 = new TreeNodeLink();
treeNodeLink_13.setNodeIdFrom(1L);
treeNodeLink_13.setNodeIdTo(13L);
treeNodeLink_13.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_13.setRuleLimitValue("C");
List<TreeNodeLink> treeNodeLinkList_1 = new ArrayList<>();
treeNodeLinkList_1.add(treeNodeLink_11);
treeNodeLinkList_1.add(treeNodeLink_12);
treeNodeLinkList_1.add(treeNodeLink_13);
treeNode_01.setTreeNodeLinkList(treeNodeLinkList_1);
// 节点:11 即A站点
TreeNode treeNode_11 = new TreeNode();
treeNode_11.setTreeId(10001L);
treeNode_11.setTreeNodeId(11L);
treeNode_11.setNodeType(NodeType.LEAF.getCode());
treeNode_11.setNodeValue(null);
treeNode_11.setRuleKey(RuleType.USER_LEVEL.getType());
treeNode_11.setRuleDesc(RuleType.USER_LEVEL.getDesc());
// 链接:11->111 A站点的超级VIP用户
TreeNodeLink treeNodeLink_111 = new TreeNodeLink();
treeNodeLink_111.setNodeIdFrom(11L);
treeNodeLink_111.setNodeIdTo(111L);
treeNodeLink_111.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_111.setRuleLimitValue(RuleConstant.USER_LEVEL_SUPER_VIP);
// 链接:11->112 A站点的VIP用户
TreeNodeLink treeNodeLink_112 = new TreeNodeLink();
treeNodeLink_112.setNodeIdFrom(11L);
treeNodeLink_112.setNodeIdTo(112L);
treeNodeLink_112.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_112.setRuleLimitValue(RuleConstant.USER_LEVEL_VIP);
// 链接:11->113 A站点的普通用户
TreeNodeLink treeNodeLink_113 = new TreeNodeLink();
treeNodeLink_113.setNodeIdFrom(11L);
treeNodeLink_113.setNodeIdTo(112L);
treeNodeLink_113.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_113.setRuleLimitValue(RuleConstant.USER_LEVEL_COMMON);
List<TreeNodeLink> treeNodeLinkList_11 = new ArrayList<>();
treeNodeLinkList_11.add(treeNodeLink_111);
treeNodeLinkList_11.add(treeNodeLink_112);
treeNodeLinkList_11.add(treeNodeLink_113);
treeNode_11.setTreeNodeLinkList(treeNodeLinkList_11);
// 节点:12 B站点的会员
TreeNode treeNode_12 = new TreeNode();
treeNode_12.setTreeId(10001L);
treeNode_12.setTreeNodeId(12L);
treeNode_12.setNodeType(NodeType.LEAF.getCode());
treeNode_12.setNodeValue(null);
treeNode_12.setRuleKey(RuleType.USER_LEVEL.getType());
treeNode_12.setRuleDesc(RuleType.USER_LEVEL.getDesc());
// 链接:12->121 B站点金牌会员
TreeNodeLink treeNodeLink_121 = new TreeNodeLink();
treeNodeLink_121.setNodeIdFrom(12L);
treeNodeLink_121.setNodeIdTo(121L);
treeNodeLink_121.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_121.setRuleLimitValue(RuleConstant.USER_LEVEL_GOLD);
// 链接:12->122 B站点银牌会员
TreeNodeLink treeNodeLink_122 = new TreeNodeLink();
treeNodeLink_122.setNodeIdFrom(12L);
treeNodeLink_122.setNodeIdTo(122L);
treeNodeLink_122.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_122.setRuleLimitValue(RuleConstant.USER_LEVEL_SILVER);
// 链接:12->123 B站点铜牌会员
TreeNodeLink treeNodeLink_123 = new TreeNodeLink();
treeNodeLink_123.setNodeIdFrom(12L);
treeNodeLink_123.setNodeIdTo(123L);
treeNodeLink_123.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_123.setRuleLimitValue(RuleConstant.USER_LEVEL_BRONZE);
// 链接:12->123 B站点普通用户
TreeNodeLink treeNodeLink_124 = new TreeNodeLink();
treeNodeLink_124.setNodeIdFrom(12L);
treeNodeLink_124.setNodeIdTo(124L);
treeNodeLink_124.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_124.setRuleLimitValue(RuleConstant.USER_LEVEL_COMMON);
List<TreeNodeLink> treeNodeLinkList_12 = new ArrayList<>();
treeNodeLinkList_12.add(treeNodeLink_121);
treeNodeLinkList_12.add(treeNodeLink_122);
treeNodeLinkList_12.add(treeNodeLink_123);
treeNodeLinkList_12.add(treeNodeLink_124);
treeNode_12.setTreeNodeLinkList(treeNodeLinkList_12);
// 节点:13 C站点的会员
TreeNode treeNode_13 = new TreeNode();
treeNode_13.setTreeId(10001L);
treeNode_13.setTreeNodeId(13L);
treeNode_13.setNodeType(NodeType.LEAF.getCode());
treeNode_13.setNodeValue(null);
treeNode_13.setRuleKey(RuleType.USER_LEVEL.getType());
treeNode_13.setRuleDesc(RuleType.USER_LEVEL.getDesc());
// 链接:13->131 C站点金牌会员
TreeNodeLink treeNodeLink_131 = new TreeNodeLink();
treeNodeLink_131.setNodeIdFrom(13L);
treeNodeLink_131.setNodeIdTo(131L);
treeNodeLink_131.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_131.setRuleLimitValue(RuleConstant.USER_LEVEL_CROWN);
// 链接:13->132 C站点普通用户
TreeNodeLink treeNodeLink_132 = new TreeNodeLink();
treeNodeLink_132.setNodeIdFrom(13L);
treeNodeLink_132.setNodeIdTo(132L);
treeNodeLink_132.setRuleLimitType(RuleLimitType.EQUAL.getCode());
treeNodeLink_132.setRuleLimitValue(RuleConstant.USER_LEVEL_COMMON);
List<TreeNodeLink> treeNodeLinkList_13 = new ArrayList<>();
treeNodeLinkList_13.add(treeNodeLink_131);
treeNodeLinkList_13.add(treeNodeLink_132);
treeNode_13.setTreeNodeLinkList(treeNodeLinkList_13);
// 构建结果节点
// 结果节点:111 A站点的超级会员
TreeNode treeNode_111 = new TreeNode();
treeNode_111.setTreeId(10001L);
treeNode_111.setTreeNodeId(111L);
treeNode_111.setNodeType(NodeType.RESULT.getCode());
treeNode_111.setNodeValue("7折优惠");
// 结果节点:112 A站点的会员
TreeNode treeNode_112 = new TreeNode();
treeNode_112.setTreeId(10001L);
treeNode_112.setTreeNodeId(112L);
treeNode_112.setNodeType(NodeType.RESULT.getCode());
treeNode_112.setNodeValue("9折优惠");
// 结果节点:113 A站点的普通用户
TreeNode treeNode_113 = new TreeNode();
treeNode_113.setTreeId(10001L);
treeNode_113.setTreeNodeId(113L);
treeNode_113.setNodeType(NodeType.RESULT.getCode());
treeNode_113.setNodeValue("无优惠");
// 结果节点:121 B站点的金牌会员
TreeNode treeNode_121 = new TreeNode();
treeNode_121.setTreeId(10001L);
treeNode_121.setTreeNodeId(121L);
treeNode_121.setNodeType(NodeType.RESULT.getCode());
treeNode_121.setNodeValue("6.5折优惠");
// 结果节点:122 B站点的银牌会员牌会员
TreeNode treeNode_122 = new TreeNode();
treeNode_122.setTreeId(10001L);
treeNode_122.setTreeNodeId(122L);
treeNode_122.setNodeType(NodeType.RESULT.getCode());
treeNode_122.setNodeValue("7.5折优惠");
// 结果节点:123 B站点的铜牌会员牌会员
TreeNode treeNode_123 = new TreeNode();
treeNode_123.setTreeId(10001L);
treeNode_123.setTreeNodeId(123L);
treeNode_123.setNodeType(NodeType.RESULT.getCode());
treeNode_123.setNodeValue("8.5折优惠");
// 结果节点:124 B站点的普通用户
TreeNode treeNode_124 = new TreeNode();
treeNode_124.setTreeId(10001L);
treeNode_124.setTreeNodeId(124L);
treeNode_124.setNodeType(NodeType.RESULT.getCode());
treeNode_124.setNodeValue("无优惠");
// C站点的结果节点:131 C站点的黄金会员
TreeNode treeNode_131 = new TreeNode();
treeNode_131.setTreeId(10001L);
treeNode_131.setTreeNodeId(131L);
treeNode_131.setNodeType(NodeType.RESULT.getCode());
treeNode_131.setNodeValue("8折优惠");
TreeNode treeNode_132 = new TreeNode();
treeNode_132.setTreeId(10001L);
treeNode_132.setTreeNodeId(132L);
treeNode_132.setNodeType(NodeType.RESULT.getCode());
treeNode_132.setNodeValue("无优惠");
// 树根
TreeRoot treeRoot = new TreeRoot();
treeRoot.setTreeId(10001L);
treeRoot.setTreeRootNodeId(1L);
treeRoot.setTreeName("规则决策树");
Map<Long, TreeNode> treeNodeMap = new HashMap<>();
treeNodeMap.put(1L, treeNode_01);
treeNodeMap.put(11L, treeNode_11);
treeNodeMap.put(12L, treeNode_12);
treeNodeMap.put(13L, treeNode_13);
treeNodeMap.put(111L, treeNode_111);
treeNodeMap.put(112L, treeNode_112);
treeNodeMap.put(121L, treeNode_121);
treeNodeMap.put(122L, treeNode_122);
treeNodeMap.put(123L, treeNode_123);
treeNodeMap.put(124L, treeNode_124);
treeNodeMap.put(131L, treeNode_131);
treeNodeMap.put(132L, treeNode_132);
treeRich = new TreeRich(treeRoot, treeNodeMap);
}
}
一些还可以继续深入优化的点
可以做对应的页面进行配置
-
规则可能会膨胀,为了便于管理,可以参考Nacos的命名空间隔离设计
为了规则的实时生效,可以参考sentinel和nacos是怎么在页面配置后实时生效的
当前设计还不支持多条件都满足时,比如说满足条件的有N个优惠券,那我可能还得计算出优惠最大得组合,那就涉及到树的回溯,和树的减枝.可以使用树的序列化和反序列化,结合字符串匹配算法来进行匹配减枝,其次真正的营销系统还会分为平行式规则和递进式规则,这又是另外的扩展优化方向